Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3732e28fe9620b…

MALICIOUS

PDF

70.3 KB Created: 2021-01-21 12:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5d91c23d750680933892db2526c00f78 SHA-1: 7300891e50ba1742fdad256c8b7b08fbb8389a78 SHA-256: 3b3732e28fe9620b3d8fdd1f5bc4cb27bf6e1bba9df70e1c9b7a5819e8a9390a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/wb?keyword=cazwell%20ice%20cream%20truck%20music%20video PDF link annotation
    • https://cdn.sqhk.co/jirowolad/giogijh/38531508225.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/ThhPaz3/sazalotevosefipa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5ffd0c2a3792b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_5ff8977ba1bdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483608/normal_5fb2a46614df2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_60045e6f1ba31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_5fc7661027550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411944/normal_5fae56139b56d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453334/normal_5ff1c9abda947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_5f8c12073e735.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5ffeb3ea7a652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389355/normal_5fc6cb4143680.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilagikudi.rf.gd/pozetisitelawox.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/mx_android_tv_box_user_manual.pdfIn PDF document text
    • http://webidiwotew.epizy.com/lasagna_sheets_ingredients.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66F 5256 bytes
SHA-256: ba76145e41fb15ea98ff16632f88c175638866473af39d95821d4f3190dffcb2
font_01_sfnt_off0000e856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE856 10588 bytes
SHA-256: a50b121e59f67826178b2aac285c3015a300b031b61c2363eecab1a52f7f1f05